French electronic duo Daft Punk, the original robot DJs, in "Tron: Legacy"
French electronic duo Daft Punk, the original robot DJs, in "Tron: Legacy" - 

They said it couldn't be done: Teaching robots good taste. "Actuality" visits Spotify, where algorithms tell 75 million users what to listen to. Then, Tim and Sabri talk with a world-touring musician and a critic to see if this trend will save the arts — or doom them.

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